/*
 * Copyright (c) 2007-2012, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * $Id: WhitespaceStrippingElementMatcher.java,v 1.1.2.1 2005/08/01 01:30:15 jeffsuttor Exp $
 */
package com.sun.org.apache.xpath.internal;

import javax.xml.transform.TransformerException;

import org.w3c.dom.Element;

/**
 * A class that implements this interface can tell if a given element should
 * strip whitespace nodes from it's children.
 */
public interface WhitespaceStrippingElementMatcher {
    /**
     * Get information about whether or not an element should strip whitespace.
     * @see <a href="http://www.w3.org/TR/xslt#strip">strip in XSLT Specification</a>
     *
     * @param support The XPath runtime state.
     * @param targetElement Element to check
     *
     * @return true if the whitespace should be stripped.
     *
     * @throws TransformerException
     */
    public boolean shouldStripWhiteSpace(XPathContext support, Element targetElement) throws TransformerException;

    /**
     * Get information about whether or not whitespace can be stripped.
     * @see <a href="http://www.w3.org/TR/xslt#strip">strip in XSLT Specification</a>
     *
     * @return true if the whitespace can be stripped.
     */
    public boolean canStripWhiteSpace();
}
